1. One who cannot do the simpest tasks.
2. One who continuously creates havocs on the road due to making more than 2 attempts at parallel parking, running a stop sign, going 20 in a 30 mph zone.
3. Generally...an idiot.

1. You jabroni! The bowling ball goes up the lane...not BACKWARDS!
2. Did you see that jabroni? s/he rolled through the stop sign and didn't wait their turn.

A term often associated with Turbine Outages in Maine. Often used around Steam Turbines, by graduates of Maine Maritime.

What a fucking Jabroni!
I said the HP turbine, you fucking jabroni!
See if you can get this job done right this time, no more jabroni jobs!
We really got a jabroni when we got him.
I thought we would'nt have a jabroni job if we used the Medford team.
Put your hard hat on you fucking jabroni.
Who was the jabroni that aligned this turbine?
That fucking Jabroni put the pry bar in the packing box.

As a member of the semi-gang group known as the "jabronies," this person usually Italian with slicked back greasy hair which they run their hands through to style, they will wear light colored Polo shirts with popped collars, vintage looking jeans, Puma tennis shoes, and possibly be driving an American made sports car, usually a Mustang. A jabroni has unknowingly accepted the fact that he is a meaningless and identityless part of society. A jabroni's girlfriend is almost always a sharastitute and the leader of the jabronies is the jamoke.

"Hey did you see those Jabronies over there with there mustangs?"
"Of course I did, I'm the Jamoke! Now beat it!"